* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #1a1a2e;
  color: #e0e0e0;
  min-height: 100vh;
}

/* --- Header --- */
header {
  background: #16213e;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid #0f3460;
}

header h1 {
  font-size: 20px;
  color: #ffffff;
}

header .subtitle {
  font-weight: 300;
  color: #8892b0;
  margin-left: 8px;
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.connected {
  background: #00e676;
  box-shadow: 0 0 8px rgba(0, 230, 118, 0.6);
  animation: pulse 2s infinite;
}

.status-dot.disconnected {
  background: #ff5252;
  box-shadow: 0 0 8px rgba(255, 82, 82, 0.6);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* --- Controls --- */
.controls {
  background: #16213e;
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #0f3460;
}

.filter-buttons {
  display: flex;
  gap: 8px;
}

.filter-btn {
  padding: 6px 16px;
  border: 1px solid #0f3460;
  background: transparent;
  color: #8892b0;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.filter-btn:hover {
  background: #0f3460;
  color: #fff;
}

.filter-btn.active {
  background: #0f3460;
  color: #ffffff;
  border-color: #1a8cff;
}

.controls-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #8892b0;
  cursor: pointer;
}

.clear-btn {
  padding: 6px 12px;
  border: 1px solid #ff5252;
  background: transparent;
  color: #ff5252;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.clear-btn:hover {
  background: #ff5252;
  color: #fff;
}

/* --- Main Layout --- */
.main-layout {
  display: flex;
  gap: 16px;
  padding: 16px 24px;
  height: calc(100vh - 120px);
}

.panel {
  background: #16213e;
  border-radius: 8px;
  border: 1px solid #0f3460;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel h2 {
  font-size: 14px;
  font-weight: 600;
  padding: 12px 16px;
  background: #0f3460;
  color: #8892b0;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* --- Feed Panel --- */
.feed-panel {
  flex: 1;
}

.message-feed {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.message-feed::-webkit-scrollbar {
  width: 6px;
}

.message-feed::-webkit-scrollbar-track {
  background: #1a1a2e;
}

.message-feed::-webkit-scrollbar-thumb {
  background: #0f3460;
  border-radius: 3px;
}

.message-feed::-webkit-scrollbar-thumb:hover {
  background: #1a8cff;
}

/* --- Message Cards --- */
.message-card {
  background: #1a1a2e;
  border-radius: 6px;
  margin-bottom: 6px;
  border-left: 3px solid #555;
  overflow: hidden;
}

.message-card.type-osd { border-left-color: #00e676; }
.message-card.type-state { border-left-color: #448aff; }
.message-card.type-event { border-left-color: #ff9100; }
.message-card.type-service { border-left-color: #e040fb; }
.message-card.type-status { border-left-color: #ffea00; }
.message-card.type-request { border-left-color: #00e5ff; }

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 12px;
}

.card-header:hover {
  background: rgba(255, 255, 255, 0.03);
}

.card-time {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  color: #666;
  min-width: 100px;
}

.card-type {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-weight: 700;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
  min-width: 70px;
  text-align: center;
}

.type-osd .card-type { background: rgba(0, 230, 118, 0.15); color: #00e676; }
.type-state .card-type { background: rgba(68, 138, 255, 0.15); color: #448aff; }
.type-event .card-type { background: rgba(255, 145, 0, 0.15); color: #ff9100; }
.type-service .card-type { background: rgba(224, 64, 251, 0.15); color: #e040fb; }
.type-status .card-type { background: rgba(255, 234, 0, 0.15); color: #ffea00; }
.type-request .card-type { background: rgba(0, 229, 255, 0.15); color: #00e5ff; }

.card-sn {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  color: #8892b0;
}

.card-topic {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 11px;
  color: #555;
  padding: 0 12px 6px;
}

.card-payload {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 11px;
  color: #8892b0;
  background: rgba(0, 0, 0, 0.2);
  padding: 8px 12px;
  margin: 0 8px 8px;
  border-radius: 4px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 300px;
  overflow-y: auto;
}

.card-payload.collapsed {
  display: none;
}

/* --- Video Panel --- */
.video-panel {
  width: 450px;
  min-width: 350px;
}

.stream-input {
  display: flex;
  padding: 12px;
  gap: 8px;
}

.stream-input input {
  flex: 1;
  padding: 8px 12px;
  background: #1a1a2e;
  border: 1px solid #0f3460;
  border-radius: 4px;
  color: #e0e0e0;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
}

.stream-input input:focus {
  outline: none;
  border-color: #1a8cff;
}

.stream-input button {
  padding: 8px 20px;
  background: #0f3460;
  border: 1px solid #1a8cff;
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.2s;
}

.stream-input button:hover {
  background: #1a8cff;
}

.video-container {
  flex: 1;
  padding: 0 12px 12px;
  position: relative;
}

video {
  width: 100%;
  border-radius: 4px;
  background: #000;
  display: none;
}

.video-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 250px;
  background: #1a1a2e;
  border-radius: 4px;
  color: #555;
  font-size: 14px;
  text-align: center;
  padding: 20px;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .main-layout {
    flex-direction: column;
  }

  .video-panel {
    width: 100%;
    min-width: 0;
    max-height: 400px;
  }
}